Custom OEM 6061 Aluminum OKUMA 9 Axis 5 Linkage Turn Milling Valve Block Machine completes multiple processes in one clamping, avoids cumulative clamping error and ensures hydraulic sealing performance for 6061 aluminum valve body. Materials We Can Machine We can machine various materials including aluminum, stainless steel, alloy steel, brass, copper, and engineering plastics. Custom materials are also available according to customer specifications. 6061 aluminum Other